Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
cau luc » cau truc, cau phuc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cam luc » cam xuc
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ma hai » ta hai, va hai, xa hai
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky sang ma hai. hieu ve ((cam luc) or (cau luc)) va dan vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky sang ma hai. hieu ve ((cam luc) OR (cau luc)) va dan vi cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ky sang ma hai. hieu ve ((cam luc) or (cau luc)) va dan vi cua te*.